/Engine/Plugins/Runtime/GeometryCache/Source/GeometryCache/Classes/GeometryCacheTrackStreamable.h
Get the CunksIds that need to be loaded to display any frames falling within the given time range.
void GetChunksForTimeRange ( float StartTime, float EndTime, bool Looping, [TArray](API\Runtime\Core\Containers\TArray)< int32 > & OutChunkIndexes )